Window regulator mechanism



Aug. 17, 1948. J. B. PARSONS WINDOW REGULATOR MECHANISM Filed July 17. 1944 -121- I- I}- I .15.

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, ,faknb pqrwnad Patented Aug. 17 1948 UNITED STATES PATENT; OFFICE.

wietow I i JohnBIPafsmsS TOI do, Ohio, assignor to Malcolm Fraser, trustee; Toledo, Ohio;

Appiicatiiin Jiiiy 1'1, 1944,*seri ar nmsi'sgzre This invention relates to window regulators but more particularly-to regulators for vehicle windows, and an object is to'pr'oduce a, simple and eifici'ent regulator of the double arm type in which the arms are of unequal length-and are so T constructed and arranged that they may be operated by a single actuating member to effect the desired-uniform opening and closing movements to the window glass. g

Another object is to produce-a vehiclewi-ndow regulator of the above typee'quipped with-a pair of swinging regulator arms 'of" unequal' lei'igth, the arms being actuated by gear means-arid the ratiobetween the pitch diameter of the gears andthe length of the arms being equal m n the View of obtaining uniform window movemer'it;-

Other objects and advantages'of the invention will hereinafter appear-,and for purposes of illustration but not of limitation, an embodiment of the invention is shown in the accompanying drawings in which Figure 1 is a fragmentary side elevation of a Vehicle front door, parts of which are broken away to show the regulator mechanism for operating the Window panel; and

Figure 2 is a transverse sectional view substantially on the line 2-2 of Figure 1.

The embodiment of the invention shown on the drawings comprises an automobile front door It having a window opening ll formed with vertically disposed guideways in which the side edge portions of a window glass l2 are slidable. As will be readily understood, the window glass i2 can be lowered into the usual well l3 through the opening formed by the garnish molding I4. Embracing the lower edge of the window glass I2 is a channel IE to which is secured a depending retainer l6 which, in this instance, is arranged at the left-hand side of the channel IS. The retainer I6 is formed with a pair of horizontally elongate slotted guides H and Hi, the latter being considerably shorter than the former.

The regulator mechanism includes a pair of arms i9 and 20 each having the usual button 2| to engage in the respective guides I1 and I8 for horizontal sliding action during the vertical movements of the window glass. The outer end por- Claims (Cl. 268 -126) I supporting panel 23 on which thei'g'iilatoi mechtion of the arm 20, as indicated in Figure 2, is

as will be readily understood.-

anisrnismounted maybe bolted-or otherwise suitably fixed-to the'doo'r'lfl. v r

A one-piece double coil spiral-spring 25 has its opposite ends anchoredto-the'studs' 22 and 24 respectively in such manner that coils are wound up crput-under' tension during the'downward or opening movement of the Window glass 12, thereby to assist the regula'tor'mechanism inthe raising or closing movement of the window glass;

with the" inner end portion of the "regulator arm- 29 and extending beyond the s ad 22, isa gear sector -2t',g'"enera11 triangular in shape, and having a series of gear'teeth 21 at its outer arcuate periphery. The 'sector'26 is formed with an arcuate slot 28 into which"the stud'fi -projects; "Integral with the inner end portion of'th s n g'fre'gulator arm-'lii'and exf tehding' 'byon e s lid- 24,; is af jgeafr' sectOr ZiQ whichdikewise is generally triangular in shape, and has gear teeth 30 on its outer arcuate peripheral surface. The gear sector 26 lies between the sector 29 and the supporting bracket or panel 23 and the sector 29 is somewhat smaller than the sector 26. The two gear sectors are so arranged that certain of the teeth 21 and 39 are always in juxtaposed position so that the teeth of an actuating pinion 3| carried by the mounting plate 23 can mesh with both sectors for concomitant operation.

The teeth of the sectors 26 and 29 do not have the same pitch diameter. It will be observed that in the position of the arms l9 and 20 shown in Figure 1, they both incline to the left of their axes but in view of the difference in lengths of the arms, it will be manifest that the arms must travel at different rates of speed. The arm N], which is the shorter arm, must travel faster than the longer arm 20 in order that the respective retainer engaging studs move uniformly, thereby to effect the desired movement of the window glass l2. For this purpose. the pitch diameter of the teeth of the row 21 must be different from that of the teeth 39 and of course the portion of the actuating pinion device 3| meshing with these teeth must differ correspondingly. Consequently it will be recognized that the inequality in the lengths of the arms I9 and 20 is compensated for by the difference in pitch diameters of the gear teeth. Nevertheless, the ratios between the pitch diameter of the gear teeth and the length of the respective arms 19 and 20, are equal.

The pinion device 3| is equipped with the usual clutch or brake 32, of the type well-known in Int 3 this art, for retaining the window glass l2 in the adjusted position, and a crank handle 34 on the inside of the door l enables manual operation of the regulator mechanism, as will be readily understood by those skilled in the art.

From the above description it will be manifest that I have provided an exceedingly simple and compact regulator mechainsm which can be economically and efficiently manufactured on a production basis. Ordinarily regulators of the double arm type require an interposed actuating gear or connecting linkage, but in the above structure, the same are eliminated, thereby reducing the cost of manufacture as well as the space required for installation.

It is to be understood that numerous changes in details of construction, arrangement and operation may be efiected without departing from the spirit of the invention especially as defined in the appended claims.

7 What Iclaim is:

1. Vehicle window regulator mechanism comprising a pair of swinging regulator arms of unequal length, pivotal mounting means for said arms, said arms being adapted to be connected at their outer ends to a window panel, an external gear sector member forming a part of each arm, said pivotal mounting means comprising spaced fixed pivot pins, the pivot pin for the shorter arm passing through a slot in the sector for the longer arm, said slot being arcuate and concentric with the pivot pin of the longer arm, and pinion means having a single operating shaft meshing with said gear teeth, the pitch diameter of the teeth of one sector being different from the other to compensate for the unequal length of said arms.

2. Vehicle window regulator mechanism comprising a pair of swinging regulator arms adapted to be connected at their outer ends to a window panel, pivotal mounting means for said arms Number 4 comprising spaced pivot elements, an external gear sector member rigid with each arm, the pivot element for one arm passing through an aperture in the sector for the other arm, and pinion means having a common operating shaft meshing with the gear teeth of said sectors respectively.

3. Vehicle window regulator mechanism as claimed in claim 2, in which the gears are arranged in superposed relation.

4. Vehicle window regulator mechanism as claimed in claim 2, in which the swinging arms are of unequal length and the pivot element for the shorter arm passes through an aperture in the sector for the longer arm.

5. Vehicle Window regulator mechanism as claimed in claim 4, in which the pitch diameter of the teeth of one sector is different from the other to compensate for the unequal length of the arms.

7 JOHN B. PARSONS.

REFERENCES CITED The following references are of record in the file of this patent:

' UNITED STATES PATENTS Name Date Anthony July 4, 1893 Mayfiel-d June 19, 1906 Serste July 9, 1929 Nicholson Mar. 8, 1932 Roethel Dec. 29, 1936 Susor July 5, 1938 Ackerman Aug. 22, 1939 Egan Jan. 2, 1940 Raphael Apr. 28, 1942 FOREIGN PATENTS Country Date France July 24, 1939 Number 

